My things scattered on the floor, perhaps (6)
I believe the answer is:
crumbs
I believe this is a double definition.
'my' is the first definition.
(interjections expressing surprise!)
'things scattered on the floor perhaps' is the second definition.
(eg crumbs fed to birds)
(Other definitions for crumbs that I've seen before include "Gosh!" , "Very little to eat -- goodness gracious me!" , "Morsels of bread" , "Tiny pieces of bread or cake" , "that surprises me!" .)